Radiator for heating and ventilating units



' Jan. 15, 1924.

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Patented Jan. 15, 1924.

UNITED STATES WILFRED SBI URTLIE2E F, OF MOLINE, ILLINOIS, AS SIGNOR TOMOLINE HEAT, F MOLINE,

PATENT OFFICE.

ILLINOIS, K CORPORATION OF ILLINOIS.

RADIATOR FOR HEATING AND VENTILATING UNITS.

Original application filed March 10, 1919, Serial No. 281,799. Dividedand this application filed October 29, 1920. Serial No. 420,332.

To all whom it may concern:

Be it known that I, WILFRED SHURTLEFF, a citizen of the United States,and a resident of Moline, in the county of Rock Island and State ofIllinois, have invented a certain new anduseful Improvement in Radiatorsfor Heating and Ventilating Units, of which the following is a full,clear, concise, andexact description, reference being had to theaccompanying drawings, forming a part of this specification. Myinvention relates to heating and ventilating units, particularly to thatclass in which cold air is circulated by a fan in con- 1 tact withheating apparatus within ahousing to be heated before delivery to theroom or building. Such a device has been fully described and illustratedin an original application filed by mein the United States Patent Ofiiceon March 10th, 1919, Serial No. 281,799.

Devices of this class usually comprise a housing having an air ductwhich is connected with an air inlet such as a window opening, theoutside air being received and blown through the housing to'be heatedbefore delivery from the device.

The'heating mechanism in these heating and ventilating ,units is usuallyin the form of a steam radiator. When the unit is connected with theoutside for receiving outside air, and especially when the air is cold,the radiator sections nearest the fan or blower outlet will be so cooledthat the steam will rapidly condense there and leave cold air pockets,this considerably lowering the efliciency.

The object of my invention is therefore to provide improved radiatorconstruction and arrangement which will insure rapid and uniformcirculation of the heating element, such as steam through the radiatorsections, thereby eliminating any chance for the formation of cold airpockets where the incoming coldair strikes the radiator.

The above and other features of my invention are clearly shown in theaccompanying drawings in which Fig. 1 isa vertical sectional vlew of myimproved heating and ventilating unit,

Fig. 2 is a sectional view on line 2,2,

Fi 1, showing the radiator construction an arrangement, and

Fig. 3 is a similar sectional view but showing a modified arrangement. i

The unit shown comprises the rectangular housing 5 having the inlet duct6 extending from its rear wall to be connected in practice with someinlet for receiving air from the outside of a room or building, such,for example, as a window opening. A floor 7 separates the blowercompartment 8 from the heating compartment 9 of the housing, and in thecompartment 8 the blower 10 is supported on the. floor 7 and has itsoutlet 11 extending downwardly through the floor 7 into communicationwith the compartment 9. In the compartment 9 is the radiator structure Rwhich is mounted on legs .12. The front wall 13 of the heatingcompartment 9 is set a distance forwardly of the front wall 14 of thecompartment 8 so as -to leave the outlet 15 from the heating compartment9. Between the side walls of the housing 5, and in front of the radiatorstructure, is the partition 16 which is separated from the floor of thehousing by the space i 17, and from the floor 7 by the space orpassageway 18. Hinged along the upper edge of the partition '16 is'adamper 19 which may be swung against the abutment 20 to close thepassageway 18, or may be swung to any position in the opening 15 betweenthis abutment 20 and the wall 13. When the damper .19 is against theabutment 20 the outlet 15 is closed against the direct outflow of coldair from the blower, and all the air thrown in by the blower must passdownwardly into contact with the radiator structure to be heated, andthen will flow through the passageway 17 and through the passageway 21and outlet 15 into the room. If the damper is swung forwardly againstthe wall 13 the outlet 15 will be closed against the passageway 21 andall the air delivered by the blower will flow directly through theoutlet 15 into the room. Then the damper is set to anyintermediateposition, there will be a corresponding proportioning of cold air andheated air.

In the duct 6 a row of louvres are mounted on spindles 23 extendinghorizontally across the duct, the louvres when swung to substantiallyvertical position abutting ,with each other at their edges, and theupper and lower edges engaging with the .the frame 27 and forming acontinuation thereof is the latch lever 32 which has a downwardlyextending hook 33 at its front end. Secured on the door 31 is the arm34, having at its end the upstanding flange or hook 35, the latch hook33 being 1n the path of the hook 35. When the door 31 is closed (dottedlines as, Fig. 1) frame 27 will be in its inner position, as shown infull lines, Fig. 1', the louvres being open so that the blower draws incold air from the outside of the room. Now when the door 31 is opened adistance (full lines, Fig. .1) the hook 35 on the arm 34 will come intoengagement with the latch hook 33, and upon further outward movement ofthe door (dotted lines y, Fig. 1) the frame 27 will be drawn outwardly asufiicient distance to cause closure of the louvres 22 so that theblower will have to receive from the room through the opening 30. Whenthe door is swung to such open position it will be above the warm airoutlet 15 and will serve as a deflector. It has been found that if thedoor is swung to a certain angle, for example, 30 degrees, it will sodeflect the air from the outlet 15 that this air will not be drawndirectl back into the device by the blower but t e warm air from theoutlet 15 will be thrown-laterally into the room. The warm air from theoutlet 15 is deflected laterallyinto the room and thoroughly mixed withthe other air therein and this mixed air is then recirculated throughthe heating device until the temperature in the room is uniform.

If it is desired to stop such recirculation and again connect the deviceto receive outside air, the door 31 is closed, and during the finalclosing movement the doorengages with the latch-32 which projects outwardly through the opening 30 and shifts the frame 27 inwardly to causereopening of the louvres.

If the blower and its driving motor are -to be inspected, repaired, orremoved, access arm 34 so that the door can then be swung downwardly thefull distance. The abutments 36 and. 37 on .the frame 27 and latch 32respectively, prevent the latch from rotating the latch in this positionso that it may be engaged bythe arm 34 when the door is again closed andthe latch raised by engagement of the rounded front face of its hook 33with the hook 35 of the arm 34.

The blower blows the incoming air down-- wardly against the radiatorstructure R, and When the outside air inlet'is open and the weather iscold, cold air will be blown against the radiator structure which willbe so cooled where the cold air strikes that the steam will beimmediately condensed and cold air pockets left in the radiatorsections,

and proper circulations and heating will be interfered with. To overcomethis, I have devised such improved construction and arrangement of theradiator structure that there will be rapid and uniform circulationtherethrou h and the elimination of cold air pockets. Sne form of suchimproved construction is shown in Fig. 2. The radiator sections 1* areall connected together at the top and bottom with the exception of thelast section 1". Steam is supplied to the radiator through pipe 40 andis free to cir culate through all of the sections 1' in advance of thefar section 1*, which is closed from the other sections at its upperend. Thus as the steam is condensed by the radiation of heat from thesurfaces of the radiator sections, the products of condensation seek thelower levels and travel toward the discharge or return pipe 42. Thesection I" being dead is therefore cooler than the live sections, andthus. serves to condense the residual steam allowing the air to escapethrough the vent 41, and the condensation to pass into the dischargepipe 42. In this manner the accumulation of air in the form of pocketsin the live sections is avoided and free circulation promoted.

In Fig. 3 a modified arrangement is shown, the condenser section 1*being at the center of the radiator structure to which steam enters fromthe ends through pipes 43 and leaves through the pipe 44 which isdirectly below the condenser section 7". The steam can readily circulatethrough the various sections and the mixed air and steam will be caughtin the condenser section 1" and the air escapes through vent 45, thewater of condensation flowmg out throu h pipe 44. Thus by a slightchange in the below horizontal position and hold radiatorconstructionand arrangement free and uniform circulation is at all times assuredthrough the radiator structure.

I do not desire to be limited to the exact construction, arrangement andoperation shown and described, as modifications are possible which wouldstill come within the scope of my invention.

I claim as my invention:

1. A radiator structure comprising a plurality of radiator sectionsconnected by passageways at the top and bottom, one of said sectionsbeing disconnected from the others at the to to form a condenser forcooling the mix air and steam.

2. A radiator structure comprising a plurality of sections connectedtogether for the rapid circulation of hot steam therethrough, one ofsaid radiator sections being disconnected at its top from the others toform a dead space for the condensation for separating the condensedsteam and air, said section having an air vent.

In witness whereof, I hereunto subscribe my naine this 26 da of October,A. D. 1920.

RED SHURTLEFF.

